单项选择题

In Paragraph 1, the word "skeptical" means（）

A．doubtful
B．worried
C．sad
D．angry

<上一题目录下一题>

热门试题

单项选择题

The main purpose for the author to write this passage is（）

A．to introduce a new technology called VoIP
B．to inform that IP phone calls are sometimes quite awful
C．to tell us that IP calls are dependent on personal computers
D．to compare the IP calls with the traditional phone calls

单项选择题

People prefer IP phone calls to ordinary ones because the former is（）

A．much more convenient
B．much cheaper
C．more dependable
D．more efficient